Ryan J. Martin, Senior Vice President of Finance at Ameren (NYSE:AEE), sold 971 shares of common stock on 18 August and 20 August 2026, according to an SEC Form 4 filing.

The transaction was based on a weighted average sale price of $109.88 per share. Following the sale, Martin retains a total of 27,432 shares, which have a market value of $2.9 million based on the market close on 20 August 2026. The reporting person also holds 87 accrued dividend equivalents from the first half of 2026 and participates in equity-based compensation through restricted stock units.

Of the total shares held, 1,837 are held indirectly in a 401(k) account through the Ameren Savings Investment Plan.

Ameren is a regulated utility holding company with a market capitalisation of $29.4 billion. The company reported trailing-twelve-month revenue of $8.4 billion and net income of $1.6 billion over the same period. For the first six months of 2026, the company reported net income attributable to common shareholders of $671 million, compared to $564 million in the prior-year period, while total operating revenue was $4.2 billion, down from $4.3 billion in the prior-year period.